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纵观国外的排气门制动技术,主要由美国皆可博系统公司(JACOBS)和德国曼恩(MAN)卡车公司所垄断,并且这一技术已被列入国家法规中强制执行。
Throughout the exhaust brake technology abroad, mainly by the United States Jie Ke system (JACOBS) and the German MAN (MAN) trucking company monopoly, and this technology has been included in the national laws and regulations enforced.